<template>
  <div>
    <el-container class='home-container'>
      <el-header>
          <div>
              <img src='@/assets/heima.png' alt='' />
              <span>电商后台管理系统</span>
          </div>
          <el-button type="info" @click="logout">退出</el-button>
      </el-header>
      <el-container>
        <el-aside :width="isCollapse?'60px':'200px'">
                <div class="toggle-button" @click='toggleCollapse'>|||</div>
                <el-menu
                background-color="#333744"
                text-color="#fff"
                active-text-color="#ffd04b" 
                unique-opened 
                :collapse='isCollapse' 
                :collapse-transition='false'
                router
                :default-active='activePath'
                >
                    <el-submenu v-for='(item,index) in menuList' :key="item.id" :index="item.id+''">
                         <template slot="title">
                            <i :class="iconsObj[index]"></i>
                            <span>{{item.authName}}</span>
                         </template>
                         <el-menu-item @click="saveNavState('/'+items.path)" :index="'/'+items.path" v-for='items in item.children' :key='items.id'>
                             <i class="el-icon-menu"></i>
                            <span>{{items.authName}}</span>
                         </el-menu-item>
                    </el-submenu>
                </el-menu>
        </el-aside>
        <el-main><router-view /></el-main>
      </el-container>
    </el-container>
   
  </div>
</template>
<script>
export default {
  data(){
    return {
      menuList:[],
      iconsObj:[
        'iconfont icon-user',
        'iconfont icon-tijikongjian',
        'iconfont icon-shangpin',
        'iconfont icon-danju',
        'iconfont icon-baobiao'
      ],
      isCollapse:false,
      activePath:''
    }
  },
  created(){
    this.getMenuList()
    this.activePath= window.sessionStorage.getItem('activePath')
  },
  methods: {
    logout() {
      window.sessionStorage.clear()
      this.$router.push('/login')
    },
    async getMenuList(){
     const { data:res }= await this.$http.get('menus')
     console.log(res)
     if(res.meta.status !==200) return this.$message.error(res.meta.msg)
       this.menuList = res.data
    },
    toggleCollapse(){
       this.isCollapse= !this.isCollapse
    },
    saveNavState(activePath){
      window.sessionStorage.setItem('activePath',activePath)
      this.activePath=activePath
    }
  }
}
</script>
<style lang="stylus" scoped>
.el-container
  height 100vh
  .el-header
    background #373d41
    display flex
    justify-content space-between
    align-items center
    padding-left 0
    color #ffffff
    font-size 20px
    div
      display flex
      align-items center
      span 
        margin-left 15px
  .el-aside
    background #333744  

    .toggle-button
      background #4a5064
      font-size 10px
      line-height 24px
      color #ffffff
      text-align center
      letter-spacing 0.2em
      cursor pointer
    .el-menu
      border none
      .iconfont
        margin-right 10px
  .el-main
    background #eaeeee  
</style>